Answer:
An External Stimulus is a stimulus that comes from outside an organism. Examples: You feel cold so you put on a jacket. When you sweat, the external stimulus is either you're anxious or hot.
Explanation:
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Its an electrochemical cell that derives electrical energy from spontaneous redox reactions taking place within the cell.
-0 m/s
- average velocity=displacement/time
- the runners displacement is zero so her average velocity must be zero
